| atrium dextrum cordis | Right atrium, the atrium of the right side of the heart which receives the blood from the venae cavae and coronary sinus. Synonym: atrium dextrum cordis. (05 Mar 2000) |
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| atrium glottidis | The upper part of the laryngeal cavity from the superior aperture to the vestibular folds, bounded anteriorly by the epiglottis, laterally by themucosa overlying the quadrangular membranes and posteriorly by the mucosa overlying the arytenoid cartilages and arytenoideus muscle. Synonym: vestibulum laryngis, atrium glottidis, superior laryngeal cavity. (05 Mar 2000) |
| atrium meatus medii | The anterior expanded portion of the middle meatus of the nose, just above the vestibule. Synonym: atrium meatus medii, atrium. (05 Mar 2000) |
| atrium of heart | The upper chamber of each half of the heart. Synonym: atrium cordis, atrium. Left atrium of heart, atrium of the left side of the heart which receives the blood from the pulmonary veins. Synonym: atrium sinistrum cordis, atrium pulmonale. (05 Mar 2000) |
| atrium pulmonale | left atrium of heart |
| atrium sinistrum cordis | left atrium of heart |
| right atrium | <anatomy> The thin-walled chamber of the heart which pumps blood into the right ventricle for ejection into the pulmonary circulation. (27 Sep 1997) |
| right atrium of heart | Right atrium, the atrium of the right side of the heart which receives the blood from the venae cavae and coronary sinus. Synonym: atrium dextrum cordis. (05 Mar 2000) |
| heart atrium | The upper right and left chambers of the heart. (12 Dec 1998) |
| nasal atrium | The anterior expanded portion of the middle meatus of the nose, just above the vestibule. Synonym: atrium meatus medii, atrium. (05 Mar 2000) |
| oblique vein of left atrium | A small vein on the posterior wall of the left atrium which merges with the great cardiac vein to form the coronary sinus; it is developed from the left common cardinal vein, and occasionally persists as a left superior vena cava. Synonym: vena obliqua atrii sinistri, Marshall's oblique vein. (05 Mar 2000) |
| left atrium | <anatomy> The thin-walled chamber of the heart which pumps blood into the left ventricle for ejection into the systemic circulation. (27 Sep 1997) |